Microsoft is recommending the use of Internet Explorer 10 for better performance when viewing HTML5 web content and Metro-styled apps in Windows 8. As Microsoft points out, other platforms do not provide the same level of performance in apps as Internet Explorer 10 does.
Microsoft also points out that anyone writing a Metro style app can easily embed web content inside their app. “Anyone writing a Metro style app for Windows 8 can easily include Web content in their app. In an HTML or XAML app, just include an iframe element or a WebView control to get the full benefit of IE 10 performance,” Microsoft adds.Further reading: IE10, Microsoft, Windows 8